// The contents of this file are subject to the Mozilla Public License Version
// 1.1
//(the "License"); you may not use this file except in compliance with the
//License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
//
//Software distributed under the License is distributed on an "AS IS" basis,
//WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
//for the specific language governing rights and
//limitations under the License.
//
//The Original Code is "The Columba Project"
//
//The Initial Developers of the Original Code are Frederik Dietz and Timo
// Stich.
//Portions created by Frederik Dietz and Timo Stich are Copyright (C) 2003.
//
//All Rights Reserved.
package org.columba.mail.spam.rules;

import org.columba.mail.folder.IMailbox;
import org.columba.ristretto.message.Header;


/**
 * Check if To: header is missing.
 * 
 * @author fdietz
 *
 */
public class MissingToHeaderRule extends AbstractRule {

    public MissingToHeaderRule() {
        super("MissingToHeaderRule");
    }
    /**
     * @see org.columba.mail.spam.rules.Rule#score(IMailbox, java.lang.Object)
     */
    public float score(IMailbox folder, Object uid) throws Exception {
        Header header = folder.getHeaderFields(uid, new String[] { "To"});
        String from = header.get("To");
        if (from == null) return MAX_PROBABILITY;
        if (from.length() == 0) return MAX_PROBABILITY;
        
        return NEARLY_ZERO;
    }

}
